Fatal Error - Uncaught ValueError

[nitinsinghal123]

Hello

I am getting an error:

Fatal error: Uncaught ValueError: file_get_contents(): Argument #1 ($filename) must not contain any null bytes in E:\xampp\htdocs\testing\pdf_headless_chrome\vendor\beganovich\snappdf\src\Snappdf.php:296 Stack trace: #0 E:\xampp\htdocs\testing\pdf_headless_chrome\vendor\beganovich\snappdf\src\Snappdf.php(296): file_get_contents('%PDF-1.4\n%\xD3\xEB\xE9\xE1\n...') #1 E:\xampp\htdocs\testing\pdf_headless_chrome\vendor\beganovich\snappdf\src\Snappdf.php(252): Beganovich\Snappdf\Snappdf->executeOnWindows(Array, 'C:\Users\nitin....', Array) #2 E:\xampp\htdocs\testing\pdf_headless_chrome\vendor\beganovich\snappdf\src\Snappdf.php(272): Beganovich\Snappdf\Snappdf->generate() #3 E:\xampp\htdocs\testing\pdf_headless_chrome\test.php(22): Beganovich\Snappdf\Snappdf->save('filetest.pdf') #4 {main} thrown in E:\xampp\htdocs\testing\pdf_headless_chrome\vendor\beganovich\snappdf\src\Snappdf.php on line 296

My code is:

include 'vendor/autoload.php'; $snappdf = new \Beganovich\Snappdf\Snappdf();

$pdf = $snappdf ->setHtml('Hello world') ->save('filetest.pdf');

Please help.